如何添加动态数组crossJoin Laravel

Question

我有以下动态数组，并想以交叉连接格式添加它，即

$matrix = $collection->crossJoin(['a', 'b'], ['I', 'II']);

动态数组：

Array
(
    [0] => Array
        (
            [0] => Array
                (
                    [propertyValueName] => A
                    [propertyValueId] => 200000345
                    [propertyValueDisplayName] => A
                )

            [1] => Array
                (
                    [propertyValueName] => B
                    [propertyValueId] => 200000346
                    [propertyValueDisplayName] => B
                )

            [2] => Array
                (
                    [propertyValueName] => C
                    [propertyValueId] => 200000347
                    [propertyValueDisplayName] => C
                )

        )

    [1] => Array
        (
            [0] => Array
                (
                    [propertyValueName] => 32
                    [propertyValueId] => 200000331
                    [propertyValueDisplayName] => 32
                )

            [1] => Array
                (
                    [propertyValueName] => 34
                    [propertyValueId] => 100010481
                    [propertyValueDisplayName] => 34
                )

            [2] => Array
                (
                    [propertyValueName] => 36
                    [propertyValueId] => 200000334
                    [propertyValueDisplayName] => 36
                )

            [3] => Array
                (
                    [propertyValueName] => 38
                    [propertyValueId] => 200000898
                    [propertyValueDisplayName] => 38
                )

        )

)